feat: Phase 1 — extract the client (web SPA + desktop) to dtoro/oikos-web

Problem: the hexagonal refactor churns the backend tree for nine more
phases; the UI delivery stack (web/ SPA, cmd/desktop Wails wrapper,
compose/web image) must move to its own repo first so doc/layout
rewrites land once on a backend-only tree.

Change:
- New repo git.hubris.network/dtoro/oikos-web (v0.33.0): web/, desktop/
  (updateURL repointed to oikos-web releases), compose/, own CI (web +
  desktop jobs), own deploy script (CI-green gate, TOCTOU guard,
  version-tagged images, prune-to-3), own webhook receiver on :9798 +
  launchd unit, own compose project publishing the same 8091:80.
- Cutover executed on mac-mini in order: oikos stack's web service
  stopped+removed, oikos-web project brought up on 8091; outer Caddy
  untouched (targets the published port) — serving + Authentik flow +
  /wails 404 quirk verified post-cutover.
- Stripped from oikos: web/, cmd/desktop/, compose/web/, desktop CI
  workflow, ci.yml web job, Makefile ui/desktop/desktop-package/install
  targets, the compose web service, oikos-web from deploy.sh's fallback
  prune list; wails + go-keyring dropped from go.mod, vendor synced.
- README / CONTRIBUTING / AGENTS.md / .agents dev+operations docs now
  point at the new repo; mbse + mascot design docs carry a path note.

Risk: production SPA serving depends on the new pipeline now; rollback
is versioned-image re-up of the old web service from a pre-split
checkout (port 8091). Desktop builds installed before the split still
check dtoro/oikos releases — one manual reinstall, noted in the
oikos-web release notes.

Verification: go vet, make test (race), make generate-check, golangci
(no new findings; baseline down 400→365); post-cutover curls —
localhost:8091 200, /wails/runtime.js 404, outer Caddy 302 Authentik.

web/node_modules/eslint/lib/rules/no-mixed-operators.js

@@ -0,0 +1,253 @@
+/**
+ * @fileoverview Rule to disallow mixed binary operators.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils.js");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const ARITHMETIC_OPERATORS = ["+", "-", "*", "/", "%", "**"];
+const BITWISE_OPERATORS = ["&", "|", "^", "~", "<<", ">>", ">>>"];
+const COMPARISON_OPERATORS = ["==", "!=", "===", "!==", ">", ">=", "<", "<="];
+const LOGICAL_OPERATORS = ["&&", "||"];
+const RELATIONAL_OPERATORS = ["in", "instanceof"];
+const TERNARY_OPERATOR = ["?:"];
+const COALESCE_OPERATOR = ["??"];
+const ALL_OPERATORS = [].concat(
+	ARITHMETIC_OPERATORS,
+	BITWISE_OPERATORS,
+	COMPARISON_OPERATORS,
+	LOGICAL_OPERATORS,
+	RELATIONAL_OPERATORS,
+	TERNARY_OPERATOR,
+	COALESCE_OPERATOR,
+);
+const DEFAULT_GROUPS = [
+	ARITHMETIC_OPERATORS,
+	BITWISE_OPERATORS,
+	COMPARISON_OPERATORS,
+	LOGICAL_OPERATORS,
+	RELATIONAL_OPERATORS,
+];
+const TARGET_NODE_TYPE = /^(?:Binary|Logical|Conditional)Expression$/u;
+
+/**
+ * Normalizes options.
+ * @param {Object|undefined} options A options object to normalize.
+ * @returns {Object} Normalized option object.
+ */
+function normalizeOptions(options = {}) {
+	const hasGroups = options.groups && options.groups.length > 0;
+	const groups = hasGroups ? options.groups : DEFAULT_GROUPS;
+	const allowSamePrecedence = options.allowSamePrecedence !== false;
+
+	return {
+		groups,
+		allowSamePrecedence,
+	};
+}
+
+/**
+ * Checks whether any group which includes both given operator exists or not.
+ * @param {Array<string[]>} groups A list of groups to check.
+ * @param {string} left An operator.
+ * @param {string} right Another operator.
+ * @returns {boolean} `true` if such group existed.
+ */
+function includesBothInAGroup(groups, left, right) {
+	return groups.some(group => group.includes(left) && group.includes(right));
+}
+
+/**
+ * Checks whether the given node is a conditional expression and returns the test node else the left node.
+ * @param {ASTNode} node A node which can be a BinaryExpression or a LogicalExpression node.
+ * This parent node can be BinaryExpression, LogicalExpression
+ *      , or a ConditionalExpression node
+ * @returns {ASTNode} node the appropriate node(left or test).
+ */
+function getChildNode(node) {
+	return node.type === "ConditionalExpression" ? node.test : node.left;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		deprecated: {
+			message: "Formatting rules are being moved out of ESLint core.",
+			url: "https://eslint.org/blog/2023/10/deprecating-formatting-rules/",
+			deprecatedSince: "8.53.0",
+			availableUntil: "11.0.0",
+			replacedBy: [
+				{
+					message:
+						"ESLint Stylistic now maintains deprecated stylistic core rules.",
+					url: "https://eslint.style/guide/migration",
+					plugin: {
+						name: "@stylistic/eslint-plugin",
+						url: "https://eslint.style",
+					},
+					rule: {
+						name: "no-mixed-operators",
+						url: "https://eslint.style/rules/no-mixed-operators",
+					},
+				},
+			],
+		},
+		type: "suggestion",
+
+		docs: {
+			description: "Disallow mixed binary operators",
+			recommended: false,
+			url: "https://eslint.org/docs/latest/rules/no-mixed-operators",
+		},
+
+		schema: [
+			{
+				type: "object",
+				properties: {
+					groups: {
+						type: "array",
+						items: {
+							type: "array",
+							items: { enum: ALL_OPERATORS },
+							minItems: 2,
+							uniqueItems: true,
+						},
+						uniqueItems: true,
+					},
+					allowSamePrecedence: {
+						type: "boolean",
+						default: true,
+					},
+				},
+				additionalProperties: false,
+			},
+		],
+
+		messages: {
+			unexpectedMixedOperator:
+				"Unexpected mix of '{{leftOperator}}' and '{{rightOperator}}'. Use parentheses to clarify the intended order of operations.",
+		},
+	},
+
+	create(context) {
+		const sourceCode = context.sourceCode;
+		const options = normalizeOptions(context.options[0]);
+
+		/**
+		 * Checks whether a given node should be ignored by options or not.
+		 * @param {ASTNode} node A node to check. This is a BinaryExpression
+		 *      node or a LogicalExpression node. This parent node is one of
+		 *      them, too.
+		 * @returns {boolean} `true` if the node should be ignored.
+		 */
+		function shouldIgnore(node) {
+			const a = node;
+			const b = node.parent;
+
+			return (
+				!includesBothInAGroup(
+					options.groups,
+					a.operator,
+					b.type === "ConditionalExpression" ? "?:" : b.operator,
+				) ||
+				(options.allowSamePrecedence &&
+					astUtils.getPrecedence(a) === astUtils.getPrecedence(b))
+			);
+		}
+
+		/**
+		 * Checks whether the operator of a given node is mixed with parent
+		 * node's operator or not.
+		 * @param {ASTNode} node A node to check. This is a BinaryExpression
+		 *      node or a LogicalExpression node. This parent node is one of
+		 *      them, too.
+		 * @returns {boolean} `true` if the node was mixed.
+		 */
+		function isMixedWithParent(node) {
+			return (
+				node.operator !== node.parent.operator &&
+				!astUtils.isParenthesised(sourceCode, node)
+			);
+		}
+
+		/**
+		 * Gets the operator token of a given node.
+		 * @param {ASTNode} node A node to check. This is a BinaryExpression
+		 *      node or a LogicalExpression node.
+		 * @returns {Token} The operator token of the node.
+		 */
+		function getOperatorToken(node) {
+			return sourceCode.getTokenAfter(
+				getChildNode(node),
+				astUtils.isNotClosingParenToken,
+			);
+		}
+
+		/**
+		 * Reports both the operator of a given node and the operator of the
+		 * parent node.
+		 * @param {ASTNode} node A node to check. This is a BinaryExpression
+		 *      node or a LogicalExpression node. This parent node is one of
+		 *      them, too.
+		 * @returns {void}
+		 */
+		function reportBothOperators(node) {
+			const parent = node.parent;
+			const left = getChildNode(parent) === node ? node : parent;
+			const right = getChildNode(parent) !== node ? node : parent;
+			const data = {
+				leftOperator: left.operator || "?:",
+				rightOperator: right.operator || "?:",
+			};
+
+			context.report({
+				node: left,
+				loc: getOperatorToken(left).loc,
+				messageId: "unexpectedMixedOperator",
+				data,
+			});
+			context.report({
+				node: right,
+				loc: getOperatorToken(right).loc,
+				messageId: "unexpectedMixedOperator",
+				data,
+			});
+		}
+
+		/**
+		 * Checks between the operator of this node and the operator of the
+		 * parent node.
+		 * @param {ASTNode} node A node to check.
+		 * @returns {void}
+		 */
+		function check(node) {
+			if (
+				TARGET_NODE_TYPE.test(node.parent.type) &&
+				isMixedWithParent(node) &&
+				!shouldIgnore(node)
+			) {
+				reportBothOperators(node);
+			}
+		}
+
+		return {
+			BinaryExpression: check,
+			LogicalExpression: check,
+		};
+	},
+};